$(document).ready(function(){

      $( 'ul#subnav li' ).on( 'click', function() {
            $( this ).parent().find( 'li.active' ).removeClass( 'active' );
            $( this ).addClass( 'active' );
      	});

      $('body').css({'-moz-user-select':'-moz-none',
           '-moz-user-select':'none',
           '-o-user-select':'none',
           '-khtml-user-select':'none', /* you could also put this in a class */
           '-webkit-user-select':'none',/* and add the CSS class here instead */
           '-ms-user-select':'none',
           'user-select':'none'
     });


});